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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I have a furnace and it wasn't working this morning. I

Customer Question

I have a coleman furnace and it wasn't working this morning. I pulsing sound could be heard thru the return plenum. I checked the error code and the single LED light flashes rapidly alternating between green and red. I'm wanting to find out what this code means.
JA: How old is the appliance? Have you gotten error messages before?
Customer: Its about 10 years old and no I haven't.
JA: Do you plan on doing the work yourself?
Customer: depends on what the problem is
JA: Anything else we should know to help you best?
Customer: No
Submitted: 10 months ago.
Category: HVAC
Expert:  Rick replied 10 months ago.

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of you situation.

What is the model number of your furnace?

Customer: replied 10 months ago.
It is an Echelon 8.M series. Model number- cm8m080b12mp11a
Expert:  Rick replied 10 months ago.

I'm going to open this up to my colleagues so one of them can help. Please don't respond (even to acknowledge this post)until you get a response from us. If you respond first it will only delay your answer.